objectives: the prevalence of consanguineous marriage is about 30 % in iran and this can increase the probability of incidence of genetic impairments such as hearing impairments. hearing impairment in comparison with other hereditary disorders is the most incident. the purpose of this survey is to identify the prevalence of consanguinity among the parents of sensoryneural hearing impaired stude...

Background: Leukemia is a growing disease. The risk factors such as parental age, cousin marriage, exposure to pesticides and radiation, parental smoking, breastfeeding, and the number of older siblings are suggested as the risk factors for childhood leukemia. Objective: To evaluate the possible risk factors for childhood leukemia, including environmental, parental, genetic and other factors. M...

Two Turkish sibs, products of a second cousin marriage, with tetramelic syndactyly, ectodermal dysplasia, cleft lip and palate, renal anomalies, and mental retardation are reported. Similarities between these two brothers and previously reported cases and their mode of transmission are discussed.

Abstract Cousin marriage, a spousal union between close kin, occurs at high frequencies in many parts of the world. The rates cousin marriage humans are concordant with empirical studies that challenge traditionally held view reproduction kin is generally avoided animals. Similarly, some theoretical models animal behaviour show inbreeding avoidance more constrained than previously thought. Such...

Fertility rates in Pakistan have remained consistently high over the past three decades. While numerous studies have examined sociodemographic determinants, the role of biological factors, and particularly consanguinity, has received little attention, even though marriage between close biological relatives continues to be the norm in Pakistan. Reproductive behaviour among women in consanguineou...